Explain how production of mrna relates to gene expression. think back to what you have learned about protein synthesis in your bms courses.

I think it is because Proteins are coded by mRNA, thus only mRNA reflects gene expression. Gene expression starts with transcription of DNA molecule to mRNA by the enzyme RNA polymerase, a process which takes place in the nucleus of a cell. mRNA formed then diffuses to the cytoplasm where the process of translation takes place which yields proteins.